Build-up of artifacts on adsorbents during storage and its effect on passive sampling and gas chromatography-flame ionization detection of low concentrations of volatile organic compounds in air

1994 ◽  
Vol 688 (1-2) ◽  
pp. 368-374 ◽  
Author(s):  
Xu-Liang Cao ◽  
C. Nicholas Hewitt
Keyword(s):  
Gas Chromatography ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Passive Sampling ◽  
Flame Ionization Detection ◽  
Ionization Detection ◽  
Flame Ionization ◽  
Low Concentrations ◽  
Volatile Organic

Simultaneous Determination of Volatile Organic Compounds in Commercial Alcoholic Beverages by Gas Chromatography with Flame Ionization Detection

2017 ◽  
Vol 100 (5) ◽  
pp. 1492-1499 ◽  
Author(s):  
Hyung Min Kim ◽  
Gun Yang ◽  
Jung Yoon Kim ◽  
Sang Jun Yoon ◽  
Byong-kyu Shin ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Alcoholic Beverage ◽  
Alcoholic Beverages ◽  
Fast Method ◽  
Flame Ionization Detection ◽  
Ionization Detection ◽  
Flame Ionization ◽  
Volatile Organic

Abstract A simple and fast method was developed for the determination of volatile organic compounds in alcoholic beverages. Eleven volatile organic compounds (acetaldehyde, methanol, 2-propanol, tert-butanol, 1-propanol, ethyl acetate, 2-butanol, isobutanol, 1-butanol, 3-methyl-1butanol, and 2-methyl-1-butanol) in alcoholic beverages were analyzed with a simple direct-injection method using GC with flame ionization detection. These compounds should be monitored in the QC of production processes because they are detrimental to human health. The method was validated with four types of alcoholic beverages (beers, fruit wines, rice wines, and spirits) to confirm the versatility of the method. Linearity showed r2 values from 0.9986 to 0.9995, with LODs ranging from 0.010 to 1.000 mg/L. Precision and accuracy showed acceptable results, proving the effectiveness of the method. The developed method was applied to 40 commercial samples representing the four types of alcoholic beverages, and principal component analysis was performed to determine profiles of the volatile organic compounds, depending on the type of alcoholic beverage.

scholarly journals Comprehensive two-dimensional gas chromatography (GC×GC) measurements of volatile organic compounds in the atmosphere

2003 ◽  
Vol 3 (1) ◽  
pp. 1139-1181 ◽  
Author(s):  
X. Xu ◽  
L. L. P. van Stee ◽  
J. Williams ◽  
J. Beens ◽  
M. Adahchour ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Retention Indices ◽  
Two Dimensional ◽  
Ground Station ◽  
Flame Ionization ◽  
Peak Identification ◽  
Volatile Organic

Abstract. During the MINOS campaign in August 2001 comprehensive two-dimensional gas chromatography (GC×GC) was applied to the in situ measurements of atmospheric volatile organic compounds (VOCs) at the Finokalia ground station, Crete. The measurement system employs a thermal desorption unit for on-line sampling and injection, and a GCxGC separation system equipped with a flame ionization detector (FID) for detection. The system was optimized to resolve C7−C14 organic components. Two-dimensional chromatograms from measurements of Finokalia air samples show several hundred well-separated peaks. To facilitate peak identification, cartridge samples collected at Finokalia were analyzed using the same GC×GC system coupled with a time-of-flight mass spectrometer (TOF-MS). The resulting mass spectra were deconvoluted and compared to spectra from a database for tentative peak identification. About 650 peaks have been identified in the two-dimensional plane, with significant signal/noise ratios (>100) and high spectra similarities (>800). By comparing observed retention indices with those found in the literature, 235 of the identifications have been confirmed. 150 of the confirmed compounds show up in the C7−C14 range of the chromatogram from the in situ measurement. However, at least as many peaks remain unidentified. For quantification of the GCxGC measurements, peak volumes of measured compounds have been integrated and externally calibrated using a standard gas mixture.

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